Frequencies for first 10,000 rows of pct012l096 variable in sf12000860us27 dataset :

   93 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,885       98.85       98.85
          1 |        102        1.02       99.87
          2 |         10        0.10       99.97
          3 |          1        0.01       99.98
          4 |          1        0.01       99.99
          8 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 18 Apr 2017